Aes加密解密方法使用Hex進行了編碼解碼

package com.baidu.wallet.bdwallet.utils;
import java.io.UnsupportedEncodingException;  
import java.security.InvalidKeyException;  
import java.security.NoSuchAlgorithmException;  
import javax.crypto.BadPaddingException;  
import javax.crypto.Cipher;  
import javax.crypto.IllegalBlockSizeException;  
import javax.crypto.NoSuchPaddingException;  
import javax.crypto.spec.SecretKeySpec; 
import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.binary.Hex;
public class Test {
	 private  static final String AES="AES";  
	 private  static final String UTF8="UTF-8";  
	    
	   /**
	    * AES加密
	    * @param content
	    * @param pkey
	    * @return
	    * @throws DecoderException
	    */
	    private static byte[] encrypt(String content, String pkey) throws DecoderException {  
	        try {  
	            String private_key=pkey;
	            byte[] encodeFormat=null;
				try {
					//祕鑰 Hex解碼為什麼祕鑰要進行解碼，因為祕鑰是某個祕鑰明文進行了Hex編碼後的值，所以在使用的時候要進行解碼
					encodeFormat = Hex.decodeHex(private_key.toCharArray());
				} catch (DecoderException e) {
					e.printStackTrace();
				}
	            SecretKeySpec key = new SecretKeySpec(encodeFormat, AES);  
	            // Cipher物件實際完成加密操作  
	            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");    
	            // 加密內容進行編碼  
	            byte[] byteContent = content.getBytes(UTF8);  
	            // 用密匙初始化Cipher物件  
	            cipher.init(Cipher.ENCRYPT_MODE, key); 
	            // 正式執行加密操作  
	            byte[] result = cipher.doFinal(byteContent);  
	            return result;  
	        } catch (NoSuchAlgorithmException e) {  
	            e.printStackTrace();  
	        } catch (NoSuchPaddingException e) {  
	            e.printStackTrace();  
	        } catch (InvalidKeyException e) {  
	            e.printStackTrace();  
	        } catch (UnsupportedEncodingException e) {  
	            e.printStackTrace();  
	        } catch (IllegalBlockSizeException e) {  
	            e.printStackTrace();  
	        } catch (BadPaddingException e) {  
	            e.printStackTrace();  
	        }  
	        return null;  
	    }  
	  
	    /**
	     * AES解密
	     * @param contents
	     * @param password
	     * @return
	     * @throws DecoderException
	     */
	    private static byte[] decrypt(String contents, String password) throws DecoderException {  
	        try { 
	        	//密文使用Hex解碼
	        	byte[]content = Hex.decodeHex(contents.toCharArray());  
	        	//祕鑰 Hex解碼為什麼祕鑰要進行解碼，因為祕鑰是某個祕鑰明文進行了Hex編碼後的值，所以在使用的時候要進行解碼
	            byte[] encodeFormat = Hex.decodeHex(password.toCharArray()); 
	            SecretKeySpec key = new SecretKeySpec(encodeFormat, AES);  
	            // Cipher物件實際完成加密操作  
	            Cipher cipher = Cipher.getInstance(AES);  
	            // 用密匙初始化Cipher物件  
	            cipher.init(Cipher.DECRYPT_MODE, key);  
	            // 正式執行解密操作  
	            byte[] result = cipher.doFinal(content);  
	            return result;  
	        } catch (NoSuchAlgorithmException e) {  
	            e.printStackTrace();  
	        } catch (NoSuchPaddingException e) {  
	            e.printStackTrace();  
	        } catch (InvalidKeyException e) {  
	            e.printStackTrace();  
	        } catch (IllegalBlockSizeException e) {  
	            e.printStackTrace();  
	        } catch (BadPaddingException e) {  
	            e.printStackTrace();  
	        }  
	        return null;  
	    }  
	  
	    /**
	     * Aes加密
	     * @param context 明文
	     * @param private_key 祕鑰
	     * @return 
	     * @throws DecoderException
	     */
	   public static String  encryption(String context,String private_key) throws DecoderException{
		   //加密後的明文也就變成了密文
		   byte[] encryptResult = encrypt(context, private_key);  
		   //密碼文Hex編碼
	       String encryptResultStr = Hex.encodeHexString(encryptResult);
		   return encryptResultStr;
	   }
	   
	   /**
	    * Aes解密
	    * @param context 密文
	    * @param private_key 祕鑰
	    * @return
	    * @throws DecoderException
	    * @throws UnsupportedEncodingException
	    */
	   public static String decryption(String context,String private_key) throws DecoderException, UnsupportedEncodingException{
		  //這裡的密文解密前先進行了Hex解碼
		   byte[] decryptResult = decrypt(context, private_key); 
		   String result = new String(decryptResult, UTF8); 
		   return result;
	   }
	  
	  
	    public static void main(String[] args) throws UnsupportedEncodingException, DecoderException { 
	    	//加密內容
	        String content = "123456787654321";  
	        //AES加密解密祕鑰
	        String password = "這個值一般都是給定的，雙發都知道";
	        // 加密  
	        System.out.println("加密前：" + content);  
	        // 呼叫加密方法
	        String encryptResultStr = encryption(content, password);  
	        System.out.println("加密後：" + encryptResultStr);  
	        // 呼叫解密方法
	        String result  = decryption(encryptResultStr, password);  
	        // 解密內容進行解碼  
	        System.out.println("解密後：" + result);  
	    }  
}
 

<dependency>  
            <groupId>commons-codec</groupId>  
            <artifactId>commons-codec</artifactId>  
            <version>1.4</version>  
        </dependency>